Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d99e4062eadd36…

MALICIOUS

PDF

67.9 KB Created: 2021-09-01 13:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 29822c54cc5cb8dc2ae1fdb7596b1c59 SHA-1: eaf75d69398cacf375efb01028aee9edb9ee9974 SHA-256: 14d99e4062eadd367687cccfb783dac131c24b12da0c5eaa06222c0ee187d325
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or malware distribution lure. It functions as a link farm, containing numerous embedded URLs that point to various websites, some of which are hosted on compromised CMS platforms. The primary purpose appears to be directing users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5690

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crysiq.ru/uplcv?utm_term=the+edge+of+seventeen+streaming+vf
    • http://kco.su/userfiles/file/84759293881.pdf
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a20ef2e2733---6805546452.pdf
    • http://casier-a-bouteilles.fr/file/tufugopupujevifagas.pdf
    • https://vildmarksjagt.dk/userfiles/file/butuzajoji.pdf
    • https://mimpishiodua.com/contents//files/98492228321.pdf
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/c33261889880ab66ea40a312fcd79571/33580033209.pdf
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/9f39244bddf2b4101493707c179b246c/81384374414.pdf
    • http://2016.letnifestiwal.pl/ckfinder/userfiles/files/fulofeduvadesofino.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aaaa8c0b879---23846969688.pdf
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dbe94b99eb6---82645538727.pdf
    • http://ecohost.ru/pics/images/file/92507274870.pdf
    • https://arch.ua/ckfinder/userfiles/files/lododoparawisoned.pdf
    • http://www.elmundodelapiscina.com/ckfinder/userfiles/files/22760725393.pdf
    • http://galenbio.com/images/upload/file/73187321112.pdf
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/6rruhqu7sla13qnbnbpfeav4j2/844019532.pdf
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/dd9ckqdn7iid6c4ig0t7h7d7b2/66462689367.pdf
    • http://dd-eng.com/files/files/81774541448.pdf
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/4657b3a9b10a5c5c90aaa2da32b40801/2175115399.pdf
    • http://bellina.pl/userfiles/file/toloxoxefurivam.pdf
    • https://led7.ru/file/befukagokosulu.pdf
    • https://navliecky.net/userfiles/file/67784914501.pdf
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bc51537c849---10105794386.pdf
    • http://gjbbang.com/userData/board/file/fidusaral.pdf
    • http://doks-films.com/pcms/content/file/pogalitixepid.pdf
    • http://ybshajiang.com/userfiles/file/2021-08-19/210819063412225188yj9tvawjshfn.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0b9.bin
b0379285f7035defa9c02f53a4952ad968e6da27935daf5d5a155396be478f61
pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B9 18196 bytes
font_01_sfnt_off0000efea.bin
5aa95bfebd87951fc8e6745da34914233debf64d35b8468947bc7131a272bce9
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEA 10784 bytes